Question

I need to know how to do this

Answer 1

$y = x + b > > 6 = 1 + b > > b = 5 > > y = x + 5 \\ y = 2x + c > > 6 = 2 + c > > c = 4 > > y = 2x + 4$
Q=(-2,0) and P=(-5,0)
$\frac{1}{2} \times 3 \times 5 = 7.5$